If it really becomes difficult to adjust these possible 7%, can we expect a next cycle with even higher rates, as there will be fewer machines mining!?
Your question is not clear, please elaborate.
I was referring to the difficulty adjustment. With such a high adjustment we can expect even higher fees for transactions.
I believe what the halving could cause is an increase in the value of Bitcoin, as miners will want to settle with higher values so as not to spend as much BTC.